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grant123 Veteran
Joined: 23 Mar 2005 Posts: 1080
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Posted: Fri Feb 07, 2014 7:44 pm Post subject: Laptop overheating without CPU activity |
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Sometimes my Dell XPS13 laptop overheats all the way to 100C under CPU load and shuts itself off. Lately this is sometimes happening without any significant CPU activity at all. What could it be? The only thing I can think of is a GPU mining virus/trojan. |
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666threesixes666 Veteran
Joined: 31 May 2011 Posts: 1248 Location: 42.68n 85.41w
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Posted: Fri Feb 07, 2014 8:06 pm Post subject: |
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run
and paste results back here...
my guess is dust.
"without any significant CPU activity" ps aux will tell what cpu and ram are doing and confirm no significant cpu activity.
https://wiki.gentoo.org/wiki/Troubleshooting <--- may help if you dont have wgetpaste |
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PaulBredbury Watchman
Joined: 14 Jul 2005 Posts: 7310
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Posted: Fri Feb 07, 2014 9:09 pm Post subject: Re: Laptop overheating without CPU activity |
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grant123 wrote: | overheats |
See laptop advice. _________________ Improve your font rendering and ALSA sound |
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Navar Guru
Joined: 20 Aug 2012 Posts: 353
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Posted: Fri Feb 07, 2014 9:12 pm Post subject: |
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Massive production design flaw. http://en.wikipedia.org/wiki/Dell_XPS#Problems
You shouldn't have a thermal trip regardless of CPU/GPU use under normal conditions. Meaning the manufacturer gave a damn, your ambient temperature isn't 90+ F, and half a cat or years of you and your surroundings aren't wedged inside the fan(s) and venting paths thereby building extra heat as an insulator and causing premature fan failure.
100C+ off an inaccurate itegrated diode->sensor reading is crazy to allow and obviously tripped thermal limits. Is the unit getting physically hot to the touch? If you're feeling that kind of real surface heat anywhere on that (low profile?) unit, get a reputable shop, a skilled friend that you favor with beer/meals to engineer a fix (google, XPS 13 related units seem to have serious thermal design flaws (large gap in TIM contact space, fan noise/issues) going back to 2009), or just replace the unit entirely.
Do the cooling fan(s) run? If not, BIOS->sensor->fan control issues. Dell are infamous for these and setting control points rediculously high. They're also infamous for evaluating only lower TDP sensor readings (CPU) versus the often high TDP even at 'idle' GPUs which cooked a lot of poorly thermal controlled Nvidia cards in the past and earned them a class action lawsuit.
Are you feeling any hot air from the fan exhaust? If not, then take the advice above and get the unit disassembled, completely cleaned and ensure the die surface->TIM->heatpipe->fan thermal chain is fully functional with new quality TIM (a decent non-generic grease compound will do). Dell quality control is worthless for proper TIM (thermal interface material) use. Poor surface and uneven mounting and the material used tends to degrade fast at high heat thresholds.
Finally, are you using i8kutils to control fan use? It should not be unreasonable at all for you to stay below 60C in peak sensor temp when load is low or idle with proper fan use, especially without active GPU. _________________ Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn. |
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grant123 Veteran
Joined: 23 Mar 2005 Posts: 1080
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Posted: Sat Feb 08, 2014 2:43 pm Post subject: |
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Thank you everyone. I will look into this and report back. |
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grant123 Veteran
Joined: 23 Mar 2005 Posts: 1080
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Posted: Fri Feb 14, 2014 4:20 pm Post subject: |
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Dell sent me a new fan and heatsink and wow. It's like a new computer. Dead silent and super cool. It hits 80C tops when compiling icedtea. The old parts were completely clogged with dust. emerge world is fun again. |
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grant123 Veteran
Joined: 23 Mar 2005 Posts: 1080
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Posted: Fri Feb 21, 2014 6:00 pm Post subject: |
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Strangely, it seems to be creeping back toward 100C under heavy load. At first it wouldn't go over about 80C but now it's touching 95C. Could this be due to dust accumulation in 1 week? My other thought is the thermal paste on the heatsink could be melting away. |
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